option to tie reminder time relative to planned start and/or to due date
Instead of putting specific date and time (mostly I am putting there the same like for suggested start) will be better to have there option like:
Remind - X minutes/hours/days - Before or After Planned Start / Before Due Date
It would be good to choose two reminders also so there can be one connected to start and another connected to due date.
This should retain its relative connection so that it will stay the same relation even when the other dates are changed.
And have a preference for proposed X minutes/hours/days in settings. Then I can set it as 10 minutes before suggested start date and only enable the reminder where I need. I don't need to select date and time.